| 空 |
kōng qín | (aviation) in-flight services; flight crew |
| 空 |
kōng | empty / air / sky / in vain |
| 空 |
kòng | to empty / vacant / unoccupied / space / leisure / free time |
| 勤 |
qín | diligent; industrious; hardworking / frequent; regular; constant / (bound form) work; duty; attendance |
| 勤 |
qín | (literary) diligent; industrious; hardworking (variant of 勤) / (literary) solicitous; attentive |